[jira] [Created] (HDFS-13036) Reusing the volume storage ID obtained by replicaInfo

["liaoyuxiangqin (JIRA)" <ji...@apache.org>]

liaoyuxiangqin created HDFS-13036:
-------------------------------------

             Summary: Reusing the volume storage ID obtained by replicaInfo
                 Key: HDFS-13036
                 URL: https://issues.apache.org/jira/browse/HDFS-13036
             Project: Hadoop HDFS
          Issue Type: Improvement
          Components: datanode
    Affects Versions: 3.1.0
            Reporter: liaoyuxiangqin
            Assignee: liaoyuxiangqin


When i read the getBlockReports() of FsDatasetImpl class in datanode, i found the following case code could be more simplify and need't to obtained volume storage ID by replicaInfo again and again.

{code:title=FsDatasetImpl.java|borderStyle=solid}

switch(b.getState()) {
case FINALIZED:
case RBW:
case RWR:
 builders.get(b.getVolume().getStorageID()).add(b);
 break;
case RUR:
 ReplicaInfo orig = b.getOriginalReplica();
 builders.get(b.getVolume().getStorageID()).add(orig);
 break;
case TEMPORARY:
 break;
default:
 assert false : "Illegal ReplicaInfo state.";
}

{code}



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